Remaining code for basic tile compression functionality.

cc/raster/one_copy_tile_task_worker_pool.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/raster/one_copy_tile_task_worker_pool.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/strings/stringprintf.h"
@@ skipping 278 matching lines @@
 
     task->WillComplete();
     task->CompleteOnOriginThread(this);
     task->DidComplete();
 
     task->RunReplyOnOriginThread();
   }
   completed_tasks_.clear();
 }
 
-ResourceFormat OneCopyTileTaskWorkerPool::GetResourceFormat() const {
-  return resource_provider_->best_texture_format();
+ResourceFormat OneCopyTileTaskWorkerPool::GetResourceFormat(
+    bool must_be_noncompressed,
+    bool must_support_alpha) const {
+  return resource_provider_->memory_efficient_texture_format(
+      must_be_noncompressed, must_support_alpha);
 }
 
-bool OneCopyTileTaskWorkerPool::GetResourceRequiresSwizzle() const {
-  return !PlatformColor::SameComponentOrder(GetResourceFormat());
+bool OneCopyTileTaskWorkerPool::GetResourceRequiresSwizzle(
+    bool must_be_noncompressed,
+    bool must_support_alpha) const {
+  return !PlatformColor::SameComponentOrder(
+             GetResourceFormat(must_be_noncompressed, must_support_alpha));
 }
 
 scoped_ptr<RasterBuffer> OneCopyTileTaskWorkerPool::AcquireBufferForRaster(
     const Resource* resource,
     uint64_t resource_content_id,
     uint64_t previous_content_id) {
   // TODO(danakj): If resource_content_id != 0, we only need to copy/upload
   // the dirty rect.
-  DCHECK_EQ(resource->format(), resource_provider_->best_texture_format());
   return make_scoped_ptr<RasterBuffer>(
       new RasterBufferImpl(this, resource_provider_, resource_pool_,
-                           resource_provider_->best_texture_format(), resource,
-                           previous_content_id));
+                           resource->format(), resource, previous_content_id));
 }
 
 void OneCopyTileTaskWorkerPool::ReleaseBufferForRaster(
     scoped_ptr<RasterBuffer> buffer) {
   // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
 }
 
 CopySequenceNumber
 OneCopyTileTaskWorkerPool::PlaybackAndScheduleCopyOnWorkerThread(
     bool reusing_raster_resource,
@@ skipping 253 matching lines @@
       "pending_copy_count",
       static_cast<int>(resource_pool_->total_resource_count() -
                        resource_pool_->acquired_resource_count()));
   staging_state->SetInteger(
       "bytes_pending_copy",
       static_cast<int>(resource_pool_->total_memory_usage_bytes() -
                        resource_pool_->acquired_memory_usage_bytes()));
 }
 
 }  // namespace cc